Method of and means for permanently waving hair



Dec. 6, .1932. R. L. EVANS 1,839,746

7 METHOD 0F AND MEANS FOR PERMANENTLY WAVING HAIR Original Filed Jan.21, 1932 i v i Hill Patented Dec. 6, 1932- .UNIT D STATES PATENT; orrlcaRALPH I. EVANS, OI NEW YORK, N. Y, ABSIGNOR '10 ZOTOS OOBPORATION, OFNEW YORK, N. Y, A. CORPORATION OF NEW YOBK METHOD AHD mNS B PERMANENTLYWL'VIHG HAIR Original application filed 3mm 81, 1888, Serial No.587,890. Divided. and 1988. Serial No. 815,081.

This invention relates to that class of hair waving in which a so calledpermanent wave is imparted toa pro-formed tress of ban by subjectin thetress to the action of a heating chemical, such as calcium oxide, which,when moistened, will of itself generate sufiicient heat to impart apermanent wave to the said tress.

This invention comprises a novel method of and a novel means forcontrolling the rate of cooling after the development of heat generatedby the self heating chemical has ceased. a

I have found that the rate of cooling after the development of heat hasceased can be successfully controlled by enclosing the heating chemicalin a covering of heat msulatlng material such as asbestos or wool sothat the heat will be retained for thedesired length of time.

An example of a hair waving pad embodying my invention is represente 1nthe accompanying drawing in which:

Fig. 1 represents an inside plan view of the pad in its unwra pedcondition, the inner absorbent sheet belng shown at the side of the padand the inner wrapper sheet being shown unfolded;

Fig. 2 represents an inside lan view of the pad in its unwrappedcondition after the innor wrapper flap as been perforated and the mnerface of the chemical containing envelope has been perforated, the innerabsorbent sheet being shown interposed be "tween the inner face of theheating chemical containing envelope and the inner wrapper fin s 3represents a side view of the pad wrapped around a wound tress as inuse; and F 4 represents a longitudinal central section ugh the wrappedpad.

The outer wrap r of the self wavm pad is denoted by 1 and i: preferablymade 0 nonabsorbent material, as for instance paper. The inner wra penis denoted b 2 and is preferably ma e of metal foil. his inner wrapper1s provided with a foldable flap 3. .An envelope 4 composed of aperforable impervious material, such as metal foil, is attached to theinner face of the inner wrapper 2, which envelope contains a heatingchemical, such as calcium oxide in powdered form, which chemical, whenmoistened, will of itself generate suflicient heat to impart a so calledpermanent wave to a pre-formed tress when enclosed within the ad.

An inner remova le sheet 5 of absorbent material, such as cotton fabricis arranged to be moistened and inserted between the flap 3 and theenvelope 4 after the inner face of the envelope 4 and the folded overflap 3 of the inner wrapper have been perforated. The pressing of theflap back into place will squeeze the moisture from the wetted innersheet into the envelope containing the heating chemical. v

In practice, the tress 6 is wound as usual around a mandrel 7 The tressmay be moistened either before or after it is wound, by a suitablewaving solution, such for instance as an ammoma solution. The inner faceof the impervious envelope 4 containing the hair waving chemical isperforated as shown at 8, and the folded over flap f the inner wrappermay be perforated at the same time as shown at 9. The inner sheet 5 ismoistened by water or by a suitable hair waving solution, such as thatused for moistening the tress 6.

The pad is then wrapped around the reformed tress and is preferablysecured in position at the scalp end of the tress by a suitable scalpprotecting guard of well known or approved form, such for instance asthe self locking guard 10 shown in the accompanying drawing. The outerend of the pad may be secured around the mandrel 7, as for instance bytwisting the outer wrapper of the pad around the same. The exothermicaction starts at once because of the application of moisture by thewetted inner sheet 5 of the pad to the self heating chemical through theperforations in the inner face of the impervious envelope. Heat is thenset up within the pad in order to impart a so called a permanent wave tothe pre-formed tress withp out requiring application of heat from anoutside source. It will be seen that the outside wrapper of the padserves to confine the heat to a large extent within the pad, the steamapplication fled June 8,

- there? generated by the combination of the treatm solution with thechemical being permitte to escape through the crimped outer end of theouter wrapper. However, to control the rate of cooling after thedevelopment of heat has ceased I rovide a covering of heat insulatingmateri as asbestos or wool, which covering is herein shown as a thicktube 11 which may he slipped over the pad as shown 3 and 4 to completelyenvelop it and cause the heat to be retained for the desire period oftime.

This application is a division of my co endin application filed January21, 1932 rial 0. 587,890, entitled Method of an means for permanentlywaving hair.

What I claim is: 1. The method of waving hair comprising as mysubjecting the hair to the action of a chemical which, when moistened,will generate suffieient heat to impart a permanent wave to the hair,and retaining the heat over a period of time after the developmentofheat has ceased.

2. The method of waving hair comprising subjecting the hair to theaction of a chemical which, when moistened, will generate sufficientheat to impart a permanent wave to the hair, and controlling the rate ofcooling after the development of'heat has ceased by enclosing the hair aheat insulating covering.

3. The method ofwaving hair comprisin subjecting the hair to the actionof a chem1- cal "which, when moistened, will generate suf- -ficient heatto impart a permanent wave to the hair, and controlling the rate ofcooling after the development of heat has ceased by enclosing the hairwithin a covering of as- 4 4. The method of waving hair comprisingsubjectin the hair to the action of a chemic which, w en moistened, willgenerate suflicient heat to im art a rmanent wave to the hair, andcontro g t e rate of cooling after the development of heat has ceased byenclosing the hair within a covering of wool.

5. Means for waving hair including a chemical which, when moistened,will generate sufiicient heat to impart a permanent wave to the hair andmeans for retaining the heat over a period of time after the development of heat has ceased.

6; Means for waving hair including a chemical which, when moistened,will generate suflicient heat to impart a permanent wave to the hair anda heat insulating covering for controlling the rate of cooling after thedevelopment of heat has ceased.

Means for waving hair including a chemical which, when moistened, willgenerate suflicient heat to impart a permanent wave to the hair and aheat insulating covering of asbestos for controlling the rate

